Air-regulating attachment.



H. R. KIMBLER.

AIR REGULATING ATTACHMENT.

APPLICATION HLED OCT-29, I917- Patented May14, 1918.

HENRY n. KIMBLER, or DALLAS, TEXAS.

AIR-REGULATJN'G ATTACHMENT.

i Specification of Letters Patent.

Patented May 14, 1918.

Application filed October 29, 191 7. Serial No. 199,022.

To all 'w/wm itmay concern:

Be it known that I," HENRY R. KIMBLER, citizen of the United States, residing at Dallas, in the county of Dallas and State of Texas, have invented certain new and useful Improvements in Air-Regulating Attachments, of which the following is a specification.

his invention pertains to new and useful improvements in air regulating attachments for carbureters.

In certain styles of carbureters the air inlet is controlled only by a valve mechani-' cally operated in unison with the throttle valve and the suction created by the engine has no efiect on the air supply and there is no corresponding control of the air.

The object of the invention is to provide a suction controlled valve for the air inlet of a carbureter and particularly to provide one which will not be injured or destroyed by back-firing.

In carrying out the invention a sleeve or housing is provided and constructed to be mounted at the air inlet of a carbureter. This sleeve is provided with a hinged valve normally closing the sleeve transversely and so held under light spring tension. A resilient stop is provided for the valve and the latter normally rests against this stop. Should the engine back-fire the resilient stop will yield permitting the valve to swing and thus releasing the pressure without injuring the valve, as would be the case if the valve engaged a fixed stop.

The invention will be more readily under- "stood from a perusal of the following specification and by reference to the accompanying drawings, in which an example of the invention is shown and wherein:

Figure 1 is a view of a carbureter with a heating pipe device constructed in accordance with the in vention,

Fig. 2 is a longitudinal view of the device or attachment, and

Fig. 3 is an end view of the same.

In the drawings the numeral 1 desi ates a carbureter having an air inlet 2. it the air inlet a hot air pipe 3 is connected in the usual manner.

The invention includes a housing or sleeve 4 having its outer end flared at 5. This sleeve fits snugly in the lower end of the pipe 8, the flared end 5 limiting its insertion by engaging with the edge of the pipe as shown.

attached and equipped with a At the inner end of the sleeve a disk valve 6 is transversely hinged on a shaft 7 having its end secured in the sleeve. The valve has a pair of forwardly directed ears 8 which receive said shaft and that portion 9 of the valve below the shaft is bent slightly rearward. A coiled spring 10 of light tension extends from the lower edge of the portion 9 forward to a lug 11 at the portion 5.

The spring tends to close the valve and returns it to its normal position and is of such tension as to be easily overcome by the suction created by the engine. When the valve is closed practically no air may pass the same, but as the engine starts the suction created thereby opens the valve by swinging it forward. As the suction increases the valve is drawn farther open.

It frequently happens that the engine back-fires through the carbureter and as the valve must have some kind of a stop to arrest it when the spring 10 returns it to its normal position, it is obvious that if a fixed stop was used the pressure caused by the back fire would injure if not destroy the valve. To avoid this I provide a resilient stop.

This stop comprises a yoke 12 standing transversely of the sleeve and provided with spring coils l3 havi g their ends 14 secured in the sleeve. The yoke is engaged by the rear side of the valve and the coils have a greater tension than the spring 10 so that the yoke will not yield when impinged by the valve. Should the engine back fire the valve will be swung backward and the pressure released, after which the yoke will restore it to its normal position.

It will be seen that the admission of air is controlled by the suction created by the engine and will be in proper proportion to the gasolene admitted, thereby maintaining a correct carburization which results in a saving of fuel. The resilient stop releasing back pressure caused by back firing prevents destruction of the attachment and assures a continuous operation.

The foregoing description and illustration clearly express the invention, but it is to be understood that said illustration is merely an exemplification and the invention may be carried out in various other ways.

WVhat I claim is:

1. In an air regulating attachment for carbureters, a sleeve adapted to be mounted at the air inlet of a carbureter, a valve hinged in the sleeve to swing in opposite directions, a spring in the sleeve holding the valve in its normal position and acting to return said valve from one direction to its normal position, and a resilient stop in the sleeve impinged by the valve when the latter is returned to its normal position, said stop yielding to permit the valve to swin in the opposite direction. a

2. In an air regulating attachment for carhureters, a sleeve adapted to be mounted at the air inlet of a carbureter, adisk valve hinged in the sleeve, a coiled spring having one end attached to the valve and the other end secured to the sleeve, and a resilient yoke -free from the valve and forming a stop for the valve in opposition to the coiled spring.

8. In an air regulating attachment for carbureters, a sleeve adapted to be mounted at the airinlet of a carbnreter, a disk valve hinged transversely of and within the sleeve, a spring in the sleeve connected with the valve so as to hold it normally transversely of the sleeve, said valve swinging into the sleeve against the tension of said spring, and a resilient" stop member extending transversely of the sleeve and engaged by the valve when the latter is in its normal position, said resilient stop yielding to permit a reverse swing of the valve when the latter is subjected to a back pressure.

4. In an air regulating attachment for earbureters, a sleeve adapted to be mounted at the air inlet of a carbureter, a disk valve hinged transversely of the sleeve, said valve having a portion extending below its transverse aXis, a spring within the sleeve connected with the lower extending portion of the valve, and a. spring stop engaged by the valve above the transverse axis of the latter and acting in opposition to the spring.

lln testimony whereof I have signed my name to this specification.

- HENRY R. KllVlBLlEis. 

